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Instrument cluster diagnosis 911 Carrera (996)

Only 911 Carrera 4 (996) and GT3 are

If the power supply is interrupted due to a discharged or disconnected battery and a quantity of less than 19 I remains in the tank, the calculated value for the range on remaining fuel will be deleted or falsified in the instrument cluster.

If less than 10 I of fuel remains in the tank, the fuel level warning light might not be activated. If the power supply is restored with the fuel level at less than 19 I, it is possible that the fuel level display may subsequently display too much in some 996 Carrera 4 and GT3 vehicles.

This may lead to the vehicle breaking down

Remedy in these vehicles:

Radio

The radio reverts to the Code function when the battery is disconnected and is thus no longer ready for operation.

Remedy:

Input the radio code. If the code card is unavailable, the radio code can be read from the DME control module (under "Vehicle data"). This code is also available from the Porsche IPAS.

Refill at least 19 I of fuel. The fuel level sensor is then in operating range and its display precision is guaranteed. Note: 911 Carrera (996) Technical Manual, Group 2, Tl. No. 9/99.

- The PCM reverts to the Code function when the battery is disconnected and is thus no longer ready for operation.

When the power supply is disconnected, the built-in GPS receiver loses the so-called almanac containing the satellite orbital paths.

The date and time are no longer displayed on the display after the power supply is

If the telephone card was inserted and the telephone was ready for operation, the telephone is subsequently disabled.

Remedy

Input the PCM code. If the code card is unavailable, the PCM code can also be read from the DME control module (under "Vehicle data"). This code is also available from the Porsche IPAS.

Switch on the PCM with a free panoramic view for approx. 20 minutes (to load GPS almanac).

The date and time are also adopted once the GPS almanac has been loaded; it may be necessary to change over to summer time (daylight-saving time). This time is transferred to the instrument cluster. If the time is then manually changed by means of the instrument cluster, this time is adopted by the PCM and synchronised with GPS time.

The stored stations are displayed again when station buttons 1 to 6 are pressed

The telephone is enabled again when the telephone PIN code is entered with the SIM telephone card inserted.

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